C# Error CS0666 – ‘{0}’: new protected member declared in struct

C# Error

CS0666 – ‘{0}’: new protected member declared in struct

Reason for the Error & Solution

‘member’ : new protected member declared in struct

A cannot be and is always implicitly . Because structs do not support inheritance, the concept of a member in a struct makes no sense. For more information, see .

Example

The following sample generates CS0666:

// CS0666.cs  
class M  
{  
    static void Main()  
    {  
    }  
}  
  
struct S  
{  
    protected int x;   // CS0666  
}